diff --git a/CHANGELOG.md b/CHANGELOG.md
index 790f277ab..3d0169589 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@
 * 【core  】      Ipv4Util 新增方法：检测指定 IP 地址是否匹配通配符（pr#3171@Github）
 * 【core  】      DateUtil.parse适配6位毫秒格式（issue#I7H34N@Gitee）
 * 【core  】      RandomUtil增加可选是否包含边界的重载（issue#3182@Github）
+* 【core  】      StrUtil增加truncateByByteLength方法（pr#3176@Github）
 
 ### 🐞Bug修复
 * 【core  】      修复MapUtil工具使用filter方法构造传入参数结果问题（issue#3162@Github）
diff --git a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
index e275c18ca..4621da6d4 100755
--- a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
@@ -487,20 +487,6 @@ public class StrUtil extends CharSequenceUtil implements StrPool {
 		return truncateByByteLength(str, charset, maxBytes, 4, true);
 	}
 
-	/**
-	 * 截断字符串，使用其按照GB18030编码为字节后不超过maxBytes长度。截断后自动追加省略号(...)
-	 * 用于存储数据库varchar且编码为GB2312，GBK，GB18030的字段
-	 *
-	 * @param str
-	 * @param maxBytes
-	 * @return
-	 */
-	public static String truncateGb18030(String str, int maxBytes) {
-		Charset charset = Charset.forName("GB18030");
-		//GB18030编码单个字符最大长度2
-		return truncateByByteLength(str, charset, maxBytes, 2, true);
-	}
-
 	/**
 	 * 截断字符串，使用其按照指定编码为字节后不超过maxBytes长度
 	 *
@@ -517,25 +503,25 @@ public class StrUtil extends CharSequenceUtil implements StrPool {
 		if (str == null || str.length() * factor <= maxBytes) {
 			return str;
 		}
-		byte[] sba = str.getBytes(charset);
+		final byte[] sba = str.getBytes(charset);
 		if (sba.length <= maxBytes) {
 			return str;
 		}
 		//限制字节数
-		int limitBytes;
+		final int limitBytes;
 		if (appendDots) {
 			limitBytes = maxBytes - "...".getBytes(charset).length;
 		} else {
 			limitBytes = maxBytes;
 		}
-		ByteBuffer bb = ByteBuffer.wrap(sba, 0, limitBytes);
-		CharBuffer cb = CharBuffer.allocate(limitBytes);
-		CharsetDecoder decoder = charset.newDecoder();
+		final ByteBuffer bb = ByteBuffer.wrap(sba, 0, limitBytes);
+		final CharBuffer cb = CharBuffer.allocate(limitBytes);
+		final CharsetDecoder decoder = charset.newDecoder();
 		//忽略被截断的字符
 		decoder.onMalformedInput(CodingErrorAction.IGNORE);
 		decoder.decode(bb, cb, true);
 		decoder.flush(cb);
-		String result = new String(cb.array(), 0, cb.position());
+		final String result = new String(cb.array(), 0, cb.position());
 		if (appendDots) {
 			return result + "...";
 		}
diff --git a/hutool-core/src/test/java/cn/hutool/core/util/StrUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/util/StrUtilTest.java
index ed3044f7e..03c4d1bae 100755
--- a/hutool-core/src/test/java/cn/hutool/core/util/StrUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/util/StrUtilTest.java
@@ -652,7 +652,7 @@ public class StrUtilTest {
 
 	@Test
 	public void truncateUtf8Test() {
-		String str = "这是This一段中英文";
+		final String str = "这是This一段中英文";
 		String ret = StrUtil.truncateUtf8(str, 12);
 		Assert.assertEquals("这是Thi...", ret);
 
@@ -666,26 +666,10 @@ public class StrUtilTest {
 		Assert.assertEquals(str, ret);
 	}
 
-	@Test
-	public void truncateGb18030Test() {
-		String str = "这是This一段中英文";
-		String ret = StrUtil.truncateGb18030(str, 12);
-		Assert.assertEquals("这是This...", ret);
-
-		ret = StrUtil.truncateGb18030(str, 13);
-		Assert.assertEquals("这是This一...", ret);
-
-		ret = StrUtil.truncateGb18030(str, 14);
-		Assert.assertEquals("这是This一...", ret);
-
-		ret = StrUtil.truncateGb18030(str, 999);
-		Assert.assertEquals(str, ret);
-	}
-
 	@Test
 	public void truncateByByteLengthTest() {
-		String str = "This is English";
-		String ret = StrUtil.truncateByByteLength(str, StandardCharsets.ISO_8859_1,10, 1, false);
+		final String str = "This is English";
+		final String ret = StrUtil.truncateByByteLength(str, StandardCharsets.ISO_8859_1,10, 1, false);
 		Assert.assertEquals("This is En", ret);
 	}
 }